lib/dns/gen.c

	gen.c revision f1b68725503ff3e46001eee5a1751e29a43a09d1
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann/*
0c27b3fe77ac1d5094ba3521e8142d9e7973133fMark Andrews * Copyright (C) 1998-2001  Internet Software Consortium.
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann *
0c27b3fe77ac1d5094ba3521e8142d9e7973133fMark Andrews * Permission to use, copy, modify, and distribute this software for any
0c27b3fe77ac1d5094ba3521e8142d9e7973133fMark Andrews * purpose with or without fee is hereby granted, provided that the above
0c27b3fe77ac1d5094ba3521e8142d9e7973133fMark Andrews * copyright notice and this permission notice appear in all copies.
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann *
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews */
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews/* $Id: gen.c,v 1.67 2001/11/27 00:55:52 gson Exp $ */
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews#include <config.h>
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann#include <sys/types.h>
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann#include <ctype.h>
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann#include <stdlib.h>
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews#include <stdio.h>
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews#include <stdlib.h>
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews#include <string.h>
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews#include <time.h>
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews#ifdef WIN32
00fb0253c9df8a4686115745ae91d501f62c7451Mark Andrews#include "gen-win32.h"
00fb0253c9df8a4686115745ae91d501f62c7451Mark Andrews#else
00fb0253c9df8a4686115745ae91d501f62c7451Mark Andrews#include "gen-unix.h"
00fb0253c9df8a4686115745ae91d501f62c7451Mark Andrews#endif
00fb0253c9df8a4686115745ae91d501f62c7451Mark Andrews
00fb0253c9df8a4686115745ae91d501f62c7451Mark Andrews#define FROMTEXTARGS "rdclass, type, lexer, origin, downcase, target, callbacks"
00fb0253c9df8a4686115745ae91d501f62c7451Mark Andrews#define FROMTEXTCLASS "rdclass"
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann#define FROMTEXTTYPE "type"
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann#define FROMTEXTDEF "result = DNS_R_UNKNOWN"
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann#define TOTEXTARGS "rdata, tctx, target"
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews#define TOTEXTCLASS "rdata->rdclass"
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews#define TOTEXTTYPE "rdata->type"
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann#define TOTEXTDEF "use_default = ISC_TRUE"
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann#define FROMWIREARGS "rdclass, type, source, dctx, downcase, target"
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews#define FROMWIRECLASS "rdclass"
2c089bf6d24936de631a57b4958ba6b8b5e3b23dMark Andrews#define FROMWIRETYPE "type"
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann#define FROMWIREDEF "use_default = ISC_TRUE"
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann#define TOWIREARGS "rdata, cctx, target"
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann#define TOWIRECLASS "rdata->rdclass"
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann#define TOWIRETYPE "rdata->type"
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann#define TOWIREDEF "use_default = ISC_TRUE"
be59d1eb72baa92baa74766a0a1ff4283e4e6ba5Scott Mann
#define FROMSTRUCTARGS "rdclass, type, source, target"
#define FROMSTRUCTCLASS "rdclass"
#define FROMSTRUCTTYPE "type"
#define FROMSTRUCTDEF "use_default = ISC_TRUE"

#define TOSTRUCTARGS "rdata, target, mctx"
#define TOSTRUCTCLASS "rdata->rdclass"
#define TOSTRUCTTYPE "rdata->type"
#define TOSTRUCTDEF "use_default = ISC_TRUE"

#define FREESTRUCTARGS "source"
#define FREESTRUCTCLASS "common->rdclass"
#define FREESTRUCTTYPE "common->rdtype"
#define FREESTRUCTDEF NULL

#define COMPAREARGS "rdata1, rdata2"
#define COMPARECLASS "rdata1->rdclass"
#define COMPARETYPE "rdata1->type"
#define COMPAREDEF "use_default = ISC_TRUE"

#define ADDITIONALDATAARGS "rdata, add, arg"
#define ADDITIONALDATACLASS "rdata->rdclass"
#define ADDITIONALDATATYPE "rdata->type"
#define ADDITIONALDATADEF "use_default = ISC_TRUE"

#define DIGESTARGS "rdata, digest, arg"
#define DIGESTCLASS "rdata->rdclass"
#define DIGESTTYPE "rdata->type"
#define DIGESTDEF "use_default = ISC_TRUE"

const char copyright[] =
"/*\n"
" * Copyright (C) 1998%s Internet Software Consortium.\n"
" *\n"
" * Permission to use, copy, modify, and distribute this software for any\n"
" * purpose with or without fee is hereby granted, provided that the above\n"
" * copyright notice and this permission notice appear in all copies.\n"
" *\n"
" * THE SOFTWARE IS PROVIDED \"AS IS\" AND INTERNET SOFTWARE CONSORTIUM\n"
" * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL\n"
" * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL\n"
" * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,\n"
" * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING\n"
" * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,\n"
" * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION\n"
" * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.\n"
" */\n"
"\n"
"/***************\n"
" ***************\n"
" ***************   THIS FILE IS AUTOMATICALLY GENERATED BY gen.c.\n"
" ***************   DO NOT EDIT!\n"
" ***************\n"
" ***************/\n"
"\n";

struct cc {
    struct cc *next;
    int rdclass;
    char classname[11];
} *classes;

struct tt {
    struct tt *next;
    int rdclass;
    int type;
    char classname[11];
    char typename[11];
    char dirname[256];      /* XXX Should be max path length */
} *types;

struct ttnam {
    char typename[11];
    char macroname[11];
    char attr[256];
    unsigned int sorted;
} typenames[256];

char *
upper(char *);
char *
funname(const char *, char *);
void
doswitch(const char *, const char *, const char *, const char *,
     const char *, const char *);
void
dodecl(char *, char *, char *);
void
add(int, const char *, int, const char *, const char *);
void
sd(int, const char *, const char *, char);
void
insert_into_typenames(int, const char *, const char *);

/*
 * If you use more than 10 of these in, say, a printf(), you'll have problems.
 */
char *
upper(char *s) {
    static int buf_to_use = 0;
    static char buf[10][256];
    char *b;
    int c;

    buf_to_use++;
    if (buf_to_use > 9)
        buf_to_use = 0;

    b = buf[buf_to_use];
    memset(b, 0, 256);

    while ((c = (*s++) & 0xff))
        *b++ = islower(c) ? toupper(c) : c;
    *b = '\0';
    return (buf[buf_to_use]);
}

char *
funname(const char *s, char *buf) {
    char *b = buf;
    char c;

    while ((c = *s++)) {
        *b++ = (c == '-') ? '_' : c;
    }
    *b = '\0';
    return (buf);
}

void
doswitch(const char *name, const char *function, const char *args,
     const char *tsw, const char *csw, const char *res)
{
    struct tt *tt;
    int first = 1;
    int lasttype = 0;
    int subswitch = 0;
    char buf1[11], buf2[11];
    const char *result = " result =";

    if (res == NULL)
        result = "";

    for (tt = types; tt != NULL; tt = tt->next) {
        if (first) {
            fprintf(stdout, "\n#define %s \\\n", name);
            fprintf(stdout, "\tswitch (%s) { \\\n" /*}*/, tsw);
            first = 0;
        }
        if (tt->type != lasttype && subswitch) {
            if (res == NULL)
                fprintf(stdout, "\t\tdefault: break; \\\n");
            else
                fprintf(stdout,
                    "\t\tdefault: %s; break; \\\n", res);
            fputs(/*{*/ "\t\t} \\\n", stdout);
            fputs("\t\tbreak; \\\n", stdout);
            subswitch = 0;
        }
        if (tt->rdclass && tt->type != lasttype) {
            fprintf(stdout, "\tcase %d: switch (%s) { \\\n" /*}*/,
                tt->type, csw);
            subswitch = 1;
        }
        if (tt->rdclass == 0)
            fprintf(stdout,
                "\tcase %d:%s %s_%s(%s); break;",
                tt->type, result, function,
                funname(tt->typename, buf1), args);
        else
            fprintf(stdout,
                "\t\tcase %d:%s %s_%s_%s(%s); break;",
                tt->rdclass, result, function,
                funname(tt->classname, buf1),
                funname(tt->typename, buf2), args);
        fputs(" \\\n", stdout);
        lasttype = tt->type;
    }
    if (subswitch) {
        if (res == NULL)
            fprintf(stdout, "\t\tdefault: break; \\\n");
        else
            fprintf(stdout, "\t\tdefault: %s; break; \\\n", res);
        fputs(/*{*/ "\t\t} \\\n", stdout);
        fputs("\t\tbreak; \\\n", stdout);
    }
    if (first) {
        if (res == NULL)
            fprintf(stdout, "\n#define %s\n", name);
        else
            fprintf(stdout, "\n#define %s %s;\n", name, res);
    } else {
        if (res == NULL)
            fprintf(stdout, "\tdefault: break; \\\n");
        else
            fprintf(stdout, "\tdefault: %s; break; \\\n", res);
        fputs(/*{*/ "\t}\n", stdout);
    }
}

void
dodecl(char *type, char *function, char *args) {
    struct tt *tt;
    char buf1[11], buf2[11];

    fputs("\n", stdout);
    for (tt = types; tt; tt = tt->next)
        if (tt->rdclass)
            fprintf(stdout,
                "static inline %s %s_%s_%s(%s);\n",
                type, function,
                funname(tt->classname, buf1),
                funname(tt->typename, buf2), args);
        else
            fprintf(stdout,
                "static inline %s %s_%s(%s);\n",
                type, function,
                funname(tt->typename, buf1), args);
}

void
insert_into_typenames(int type, const char *typename, const char *attr) {
    struct ttnam *ttn;
    int c;
    char tmp[256];

    ttn = &typenames[type];
    if (ttn->typename[0] == 0) {
        if (strlen(typename) > sizeof(ttn->typename) - 1) {
            fprintf(stderr, "Error:  type name %s is too long\n",
                typename);
            exit(1);
        }
        strcpy(ttn->typename, typename);
    } else if (strcmp(typename, ttn->typename) != 0) {
        fprintf(stderr, "Error:  type %d has two names: %s, %s\n",
            type, ttn->typename, typename);
        exit(1);
    }

    strcpy(ttn->macroname, ttn->typename);
    c = strlen(ttn->macroname);
    while (c > 0) {
        if (ttn->macroname[c - 1] == '-')
            ttn->macroname[c - 1] = '_';
        c--;
    }

    if (attr == NULL) {
        sprintf(tmp, "RRTYPE_%s_ATTRIBUTES", upper(ttn->macroname));
        attr = tmp;
    }

    if (ttn->attr[0] != 0 && strcmp(attr, ttn->attr) != 0) {
        fprintf(stderr, "Error:  type %d has different attributes: "
            "%s, %s\n", type, ttn->attr, attr);
        exit(1);
    }

    if (strlen(attr) > sizeof(ttn->attr) - 1) {
        fprintf(stderr, "Error:  attr (%s) [name %s] is too long\n",
            attr, typename);
        exit(1);
    }
    strcpy(ttn->attr, attr);
    ttn->sorted = 0;
}

void
add(int rdclass, const char *classname, int type, const char *typename,
    const char *dirname)
{
    struct tt *newtt = (struct tt *)malloc(sizeof(*newtt));
    struct tt *tt, *oldtt;
    struct cc *newcc;
    struct cc *cc, *oldcc;

    insert_into_typenames(type, typename, NULL);

    if (newtt == NULL) {
        fprintf(stderr, "malloc() failed\n");
        exit(1);
    }

    newtt->next = NULL;
    newtt->rdclass = rdclass;
    newtt->type = type;
    strcpy(newtt->classname, classname);
    strcpy(newtt->typename, typename);
    strcpy(newtt->dirname, dirname);

    tt = types;
    oldtt = NULL;

    while ((tt != NULL) && (tt->type < type)) {
        oldtt = tt;
        tt = tt->next;
    }

    while ((tt != NULL) && (tt->type == type) && (tt->rdclass < rdclass)) {
        if (strcmp(tt->typename, typename) != 0)
            exit(1);
        oldtt = tt;
        tt = tt->next;
    }

    if ((tt != NULL) && (tt->type == type) && (tt->rdclass == rdclass))
        exit(1);

    newtt->next = tt;
    if (oldtt != NULL)
        oldtt->next = newtt;
    else
        types = newtt;

    /*
     * Do a class switch for this type.
     */
    if (rdclass == 0)
        return;

    newcc = (struct cc *)malloc(sizeof(*newcc));
    newcc->rdclass = rdclass;
    strcpy(newcc->classname, classname);
    cc = classes;
    oldcc = NULL;

    while ((cc != NULL) && (cc->rdclass < rdclass)) {
        oldcc = cc;
        cc = cc->next;
    }

    if ((cc != NULL) && cc->rdclass == rdclass) {
        free((char *)newcc);
        return;
    }

    newcc->next = cc;
    if (oldcc != NULL)
        oldcc->next = newcc;
    else
        classes = newcc;
}

void
sd(int rdclass, const char *classname, const char *dirname, char filetype) {
    char buf[sizeof("0123456789_65535.h")];
    char fmt[sizeof("%10[-0-9a-z]_%d.h")];
    int type;
    char typename[11];
    isc_dir_t dir;

    if (!start_directory(dirname, &dir))
        return;

    sprintf(fmt,"%s%c", "%10[-0-9a-z]_%d.", filetype);
    while (next_file(&dir)) {
        if (sscanf(dir.filename, fmt, typename, &type) != 2)
            continue;
        if ((type > 65535) || (type < 0))
            continue;

        sprintf(buf, "%s_%d.%c", typename, type, filetype);
        if (strcmp(buf, dir.filename) != 0)
            continue;
        add(rdclass, classname, type, typename, dirname);
    }

    end_directory(&dir);
}

static unsigned int
HASH(char *string) {
    unsigned int n;
    unsigned char a, b;

    n = strlen(string);
    if (n == 0) {
        fprintf(stderr, "n == 0?\n");
        exit(1);
    }
    a = tolower((unsigned char)string[0]);
    b = tolower((unsigned char)string[n - 1]);

    return ((a + n) * b) % 256;
}

int
main(int argc, char **argv) {
    char buf[256];          /* XXX Should be max path length */
    char srcdir[256];       /* XXX Should be max path length */
    int rdclass;
    char classname[11];
    struct tt *tt;
    struct cc *cc;
    struct ttnam *ttn, *ttn2;
    unsigned int hash;
    struct tm *tm;
    time_t now;
    char year[11];
    int lasttype;
    int code = 1;
    int class_enum = 0;
    int type_enum = 0;
    int structs = 0;
    int depend = 0;
    int c, i, j;
    char buf1[11];
    char filetype = 'c';
    FILE *fd;
    char *prefix = NULL;
    char *suffix = NULL;
    char *file = NULL;
    isc_dir_t dir;

    for (i = 0; i <= 255; i++)
        memset(&typenames[i], 0, sizeof(typenames[i]));

    strcpy(srcdir, "");
    while ((c = isc_commandline_parse(argc, argv, "cdits:F:P:S:")) != -1)
        switch (c) {
        case 'c':
            code = 0;
            depend = 0;
            type_enum = 0;
            class_enum = 1;
            filetype = 'c';
            structs = 0;
            break;
        case 'd':
            code = 0;
            depend = 1;
            class_enum = 0;
            type_enum = 0;
            structs = 0;
            filetype = 'h';
            break;
        case 't':
            code = 0;
            depend = 0;
            class_enum = 0;
            type_enum = 1;
            filetype = 'c';
            structs = 0;
            break;
        case 'i':
            code = 0;
            depend = 0;
            class_enum = 0;
            type_enum = 0;
            structs = 1;
            filetype = 'h';
            break;
        case 's':
            sprintf(srcdir, "%s/", isc_commandline_argument);
            break;
        case 'F':
            file = isc_commandline_argument;
            break;
        case 'P':
            prefix = isc_commandline_argument;
            break;
        case 'S':
            suffix = isc_commandline_argument;
            break;
        case '?':
            exit(1);
        }

    sprintf(buf, "%srdata", srcdir);

    if (!start_directory(buf, &dir))
        exit(1);

    while (next_file(&dir)) {
        if (sscanf(dir.filename, "%10[0-9a-z]_%d",
               classname, &rdclass) != 2)
            continue;
        if ((rdclass > 65535) || (rdclass < 0))
            continue;

        sprintf(buf, "%srdata/%s_%d", srcdir, classname, rdclass);
        if (strcmp(buf + 6 + strlen(srcdir), dir.filename) != 0)
            continue;
        sd(rdclass, classname, buf, filetype);
    }
    end_directory(&dir);
    sprintf(buf, "%srdata/generic", srcdir);
    sd(0, "", buf, filetype);

    if (time(&now) != -1) {
        if ((tm = localtime(&now)) != NULL && tm->tm_year > 98)
            sprintf(year, "-%d", tm->tm_year + 1900);
        else
            year[0] = 0;
    } else
        year[0] = 0;

    if (!depend) fprintf(stdout, copyright, year);

    if (code) {
        fputs("#ifndef DNS_CODE_H\n", stdout);
        fputs("#define DNS_CODE_H 1\n\n", stdout);

        fputs("#include <isc/boolean.h>\n", stdout);
        fputs("#include <isc/result.h>\n\n", stdout);
        fputs("#include <dns/name.h>\n\n", stdout);

        for (tt = types; tt != NULL; tt = tt->next)
            fprintf(stdout, "#include \"%s/%s_%d.c\"\n",
                tt->dirname, tt->typename, tt->type);

        fputs("\n\n", stdout);

        doswitch("FROMTEXTSWITCH", "fromtext", FROMTEXTARGS,
             FROMTEXTTYPE, FROMTEXTCLASS, FROMTEXTDEF);
        doswitch("TOTEXTSWITCH", "totext", TOTEXTARGS,
             TOTEXTTYPE, TOTEXTCLASS, TOTEXTDEF);
        doswitch("FROMWIRESWITCH", "fromwire", FROMWIREARGS,
             FROMWIRETYPE, FROMWIRECLASS, FROMWIREDEF);
        doswitch("TOWIRESWITCH", "towire", TOWIREARGS,
             TOWIRETYPE, TOWIRECLASS, TOWIREDEF);
        doswitch("COMPARESWITCH", "compare", COMPAREARGS,
              COMPARETYPE, COMPARECLASS, COMPAREDEF);
        doswitch("FROMSTRUCTSWITCH", "fromstruct", FROMSTRUCTARGS,
              FROMSTRUCTTYPE, FROMSTRUCTCLASS, FROMSTRUCTDEF);
        doswitch("TOSTRUCTSWITCH", "tostruct", TOSTRUCTARGS,
              TOSTRUCTTYPE, TOSTRUCTCLASS, TOSTRUCTDEF);
        doswitch("FREESTRUCTSWITCH", "freestruct", FREESTRUCTARGS,
              FREESTRUCTTYPE, FREESTRUCTCLASS, FREESTRUCTDEF);
        doswitch("ADDITIONALDATASWITCH", "additionaldata",
             ADDITIONALDATAARGS, ADDITIONALDATATYPE,
             ADDITIONALDATACLASS, ADDITIONALDATADEF);
        doswitch("DIGESTSWITCH", "digest",
             DIGESTARGS, DIGESTTYPE,
             DIGESTCLASS, DIGESTDEF);

        /*
         * From here down, we are processing the rdata names and
         * attributes.
         */

#define PRINT_COMMA(x) (x == 255 ? "" : ",")

#define METANOTQUESTION  "DNS_RDATATYPEATTR_META | " \
             "DNS_RDATATYPEATTR_NOTQUESTION"
#define METAQUESTIONONLY "DNS_RDATATYPEATTR_META | " \
             "DNS_RDATATYPEATTR_QUESTIONONLY"
#define RESERVED "DNS_RDATATYPEATTR_RESERVED"

        /*
         * Add in reserved/special types.  This will let us
         * sort them without special cases.
         */
        insert_into_typenames(0, "reserved0", RESERVED);
        insert_into_typenames(31, "eid", RESERVED);
        insert_into_typenames(32, "nimloc", RESERVED);
        insert_into_typenames(34, "atma", RESERVED);
        insert_into_typenames(100, "uinfo", RESERVED);
        insert_into_typenames(101, "uid", RESERVED);
        insert_into_typenames(102, "gid", RESERVED);
        insert_into_typenames(251, "ixfr", METAQUESTIONONLY);
        insert_into_typenames(252, "axfr", METAQUESTIONONLY);
        insert_into_typenames(253, "mailb", METAQUESTIONONLY);
        insert_into_typenames(254, "maila", METAQUESTIONONLY);
        insert_into_typenames(255, "any", METAQUESTIONONLY);

        fprintf(stdout, "\ntypedef struct {\n");
        fprintf(stdout, "\tconst char *name;\n");
        fprintf(stdout, "\tunsigned int flags;\n");
        fprintf(stdout, "} typeattr_t;\n");
        fprintf(stdout, "static typeattr_t typeattr[] = {\n");
        for (i = 0; i <= 255; i++) {
            ttn = &typenames[i];
            if (ttn->typename[0] == 0) {
                const char *attrs;
                if (i >= 128 && i < 255)
                    attrs = "DNS_RDATATYPEATTR_UNKNOWN | "
                        "DNS_RDATATYPEATTR_META";
                else
                    attrs = "DNS_RDATATYPEATTR_UNKNOWN";
                fprintf(stdout, "\t{ \"TYPE%d\", %s}%s\n",
                       i, attrs, PRINT_COMMA(i));
            } else {
                fprintf(stdout, "\t{ \"%s\", %s }%s\n",
                       upper(ttn->typename),
                       upper(ttn->attr),
                       PRINT_COMMA(i));
            }
        }
        fprintf(stdout, "};\n");

        /*
         * Run through the list of types and pre-mark the unused
         * ones as "sorted" so we simply ignore them below.
         */
        for (i = 0; i <= 255; i++) {
            ttn = &typenames[i];
            if (ttn->typename[0] == 0)
                ttn->sorted = 1;
        }

        /*
         * Spit out a quick and dirty hash function.  Here,
         * we walk through the list of type names, and calculate
         * a hash.  This isn't perfect, but it will generate "pretty
         * good" estimates.  Lowercase the characters before
         * computing in all cases.
         *
         * Here, walk the list from top to bottom, calculating
         * the hash (mod 256) for each name.
         */
        fprintf(stdout, "#define RDATATYPE_COMPARE(_s, _d, _tn, _tp) \\\n");
        fprintf(stdout, "\tdo { \\\n");
        fprintf(stdout, "\t\tif (strcasecmp(_s,(_tn)) == 0) { \\\n");
        fprintf(stdout, "\t\t\tif ((typeattr[_d].flags & "
                      "DNS_RDATATYPEATTR_RESERVED) != 0) \\\n");
        fprintf(stdout, "\t\t\t\treturn (ISC_R_NOTIMPLEMENTED); \\\n");
        fprintf(stdout, "\t\t\t*(_tp) = _d; \\\n");
        fprintf(stdout, "\t\t\treturn (ISC_R_SUCCESS); \\\n");
        fprintf(stdout, "\t\t} \\\n");
        fprintf(stdout, "\t} while (0)\n\n");

        fprintf(stdout, "#define RDATATYPE_FROMTEXT_SW(_hash,_typename,_typep) "
               "\\\n");
        fprintf(stdout, "\tswitch (_hash) { \\\n");
        for (i = 0; i <= 255; i++) {
            ttn = &typenames[i];

            /*
             * Skip entries we already processed.
             */
            if (ttn->sorted != 0)
                continue;

            hash = HASH(ttn->typename);
            fprintf(stdout, "\t\tcase %u: \\\n", hash);

            /*
             * Find all other entries that happen to match
             * this hash.
             */
            for (j = 0; j <= 255; j++) {
                ttn2 = &typenames[j];
                if (ttn2->sorted != 0)
                    continue;
                if (hash == HASH(ttn2->typename)) {
                    fprintf(stdout, "\t\t\tRDATATYPE_COMPARE"
                           "(\"%s\", %u, "
                           "_typename, _typep); \\\n",
                           ttn2->typename, j);
                    ttn2->sorted = 1;
                }
            }
            fprintf(stdout, "\t\t\tbreak; \\\n");
        }
        fprintf(stdout, "\t}\n");

        fputs("#endif /* DNS_CODE_H */\n", stdout);
    } else if (type_enum) {
        char *s;

        fprintf(stdout, "#ifndef DNS_ENUMTYPE_H\n");
        fprintf(stdout, "#define DNS_ENUMTYPE_H 1\n\n");

        fprintf(stdout, "enum {\n");
        fprintf(stdout, "\tdns_rdatatype_none = 0,\n");

        lasttype = 0;
        for (tt = types; tt != NULL; tt = tt->next)
            if (tt->type != lasttype)
                fprintf(stdout,
                    "\tdns_rdatatype_%s = %d,\n",
                    funname(tt->typename, buf1),
                    lasttype = tt->type);

        fprintf(stdout, "\tdns_rdatatype_ixfr = 251,\n");
        fprintf(stdout, "\tdns_rdatatype_axfr = 252,\n");
        fprintf(stdout, "\tdns_rdatatype_mailb = 253,\n");
        fprintf(stdout, "\tdns_rdatatype_maila = 254,\n");
        fprintf(stdout, "\tdns_rdatatype_any = 255\n");

        fprintf(stdout, "};\n\n");

        fprintf(stdout, "#define dns_rdatatype_none\t"
            "((dns_rdatatype_t)dns_rdatatype_none)\n");

        for (tt = types; tt != NULL; tt = tt->next)
            if (tt->type != lasttype) {
                s = funname(tt->typename, buf1);
                fprintf(stdout,
                    "#define dns_rdatatype_%s\t%s"
                    "((dns_rdatatype_t)dns_rdatatype_%s)"
                    "\n",
                    s, strlen(s) < 2 ? "\t" : "", s);
                lasttype = tt->type;
            }

        fprintf(stdout, "#define dns_rdatatype_ixfr\t"
            "((dns_rdatatype_t)dns_rdatatype_ixfr)\n");
        fprintf(stdout, "#define dns_rdatatype_axfr\t"
            "((dns_rdatatype_t)dns_rdatatype_axfr)\n");
        fprintf(stdout, "#define dns_rdatatype_mailb\t"
            "((dns_rdatatype_t)dns_rdatatype_mailb)\n");
        fprintf(stdout, "#define dns_rdatatype_maila\t"
            "((dns_rdatatype_t)dns_rdatatype_maila)\n");
        fprintf(stdout, "#define dns_rdatatype_any\t"
            "((dns_rdatatype_t)dns_rdatatype_any)\n");

        fprintf(stdout, "\n#endif /* DNS_ENUMTYPE_H */\n");

    } else if (class_enum) {
        char *s;
        int classnum;

        fprintf(stdout, "#ifndef DNS_ENUMCLASS_H\n");
        fprintf(stdout, "#define DNS_ENUMCLASS_H 1\n\n");

        fprintf(stdout, "enum {\n");

        fprintf(stdout, "\tdns_rdataclass_reserved0 = 0,\n");
        fprintf(stdout, "#define dns_rdataclass_reserved0 \\\n\t\t\t\t"
            "((dns_rdataclass_t)dns_rdataclass_reserved0)\n");

#define PRINTCLASS(name, num) \
    do { \
        s = funname(name, buf1); \
        classnum = num; \
        fprintf(stdout, "\tdns_rdataclass_%s = %d%s\n", s, classnum, \
               classnum != 255 ? "," : ""); \
        fprintf(stdout, "#define dns_rdataclass_%s\t" \
               "((dns_rdataclass_t)dns_rdataclass_%s)\n", s, s); \
    } while (0)

        for (cc = classes; cc != NULL; cc = cc->next) {
            if (cc->rdclass == 4) {
                PRINTCLASS("ch", 3);
                PRINTCLASS("chaos", 3);

            } else if (cc->rdclass == 255) {
                PRINTCLASS("none", 254);
            }
            PRINTCLASS(cc->classname, cc->rdclass);
        }

#undef PRINTCLASS

        fprintf(stdout, "};\n\n");
        fprintf(stdout, "#endif /* DNS_ENUMCLASS_H */\n");
    } else if (structs) {
        if (prefix != NULL) {
            if ((fd = fopen(prefix,"r")) != NULL) {
                while (fgets(buf, sizeof(buf), fd) != NULL)
                    fputs(buf, stdout);
                fclose(fd);
            }
        }
        for (tt = types; tt != NULL; tt = tt->next) {
            sprintf(buf, "%s/%s_%d.h",
                tt->dirname, tt->typename, tt->type);
            if ((fd = fopen(buf,"r")) != NULL) {
                while (fgets(buf, sizeof(buf), fd) != NULL)
                    fputs(buf, stdout);
                fclose(fd);
            }
        }
        if (suffix != NULL) {
            if ((fd = fopen(suffix,"r")) != NULL) {
                while (fgets(buf, sizeof(buf), fd) != NULL)
                    fputs(buf, stdout);
                fclose(fd);
            }
        }
    } else if (depend) {
        for (tt = types; tt != NULL; tt = tt->next)
            fprintf(stdout, "%s:\t%s/%s_%d.h\n", file,
                tt->dirname, tt->typename, tt->type);
    }

    if (ferror(stdout) != 0)
        exit(1);

    return (0);
}